Posted by JoeBloe on 01/05/07 01:05

On Thu, 4 Jan 2007 13:14:17 -0000, "M.I.5¾"
<no.one@no.where.NO_SPAM.co.uk> Gave us:

>But that would have been an entirely new format. Same size disk maybe, but
>a new format all the same.


You don't get it. All optical disc technologies evolve.

DVDs right now have different res previews and extras than the film
segment, and it peels off the disc at a different bit rate.

What I mentioned would be no harder than that, and using CLV, very
little would need to be changed. DVDs are read at varying RPM rates
as the disc progresses. An LD could be read the same way, providing
the varying rate and best use of the optical data area real estate.

The physics are such that the data rate for the outer portion of the
disc is capable of a higher data rate than the hub portion, for any
given RPM.

That 12 inch platter would hold 4 times the data at least of a 5.25
inch disc. Entire TV series seasons could end up on one disc.

Thing is, nobody will go back to 12" as there are just too many
mechanical anomalies between the hardware and the discs themselves.
You thought the yields on BluTurd production runs were bad... 12" is
horrendous, and would quadruple with the tighter laser wavelength and
track pitch.

Maybe we should go back to piano roll methods. That's what a
holocube is essentially.

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